Yamaha F100B - Checking the Valve Springs; Checking the Valves

60C5D11
5-26
1
2
3
4
5
6
7
8
9
NOTE:
Do not mix the valve train parts. Keep them
organized in their proper groups.
7. Remove the intake valve and exhaust
valves.
NOTE:
• Be sure to keep the valves, springs, and
other parts in the order as they were
removed.
• When replacing the valve, also replace the
valve guide and stem seal.
Checking the valve springs
1. Measure the valve spring free length
a
.
Replace if out of specification.
2. Measure the valve spring tilt
b
. Replace
if out of specification.
Checking the valves
1. Check the valve face for pitting or wear.
Replace if necessary.
2. Measure the valve margin thickness
a
.
Replace if out of specification.
Valve spring compressor
8
:
90890-04019
Valve spring compressor attachment
9
:
90890-06320
S60C5380
Valve spring free length limit
a
:
52.25 mm (2.057 in)
Valve spring tilt limit
b
:
2.6 mm (0.1 in)
Cylinder head